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Runtime.php

<?php declare(strict_types=1);
/*
 * This file is part of sebastian/environment.
 *
 * (c) Sebastian Bergmann <sebastian@phpunit.de>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */
namespace SebastianBergmann\Environment;

use const PHP_BINARY;
use const PHP_BINDIR;
use const PHP_MAJOR_VERSION;
use const PHP_SAPI;
use const PHP_VERSION;
use function array_map;
use function array_merge;
use function escapeshellarg;
use function explode;
use function extension_loaded;
use function ini_get;
use function is_readable;
use function parse_ini_file;
use function php_ini_loaded_file;
use function php_ini_scanned_files;
use function phpversion;
use function sprintf;
use function strrpos;

final class Runtime
{
    private static string $rawBinary;
    private static bool $initialized = false;

/**
     * Returns true when Xdebug or PCOV is available or
     * the runtime used is PHPDBG.
     */
    public function canCollectCodeCoverage(): bool
    {
        return $this->hasXdebug() || $this->hasPCOV() || $this->hasPHPDBGCodeCoverage();
    }

/**
     * Returns true when Zend OPcache is loaded, enabled,
     * and is configured to discard comments.
     */
    public function discardsComments(): bool
    {
        if (!$this->isOpcacheActive()) {
            return false;
        }

if (ini_get('opcache.save_comments') !== '0') {
            return false;
        }

return true;
    }

/**
     * Returns true when Zend OPcache is loaded, enabled,
     * and is configured to perform just-in-time compilation.
     */
    public function performsJustInTimeCompilation(): bool
    {
        if (PHP_MAJOR_VERSION < 8) {
            return false;
        }

if (!$this->isOpcacheActive()) {
            return false;
        }

if (ini_get('opcache.jit_buffer_size') === '0') {
            return false;
        }

$jit = ini_get('opcache.jit');

if (($jit === 'disable') || ($jit === 'off')) {
            return false;
        }

if (strrpos($jit, '0') === 3) {
            return false;
        }

return true;
    }

/**
     * Returns the raw path to the binary of the current runtime.
     */
    public function getRawBinary(): string
    {
        if (self::$initialized) {
            return self::$rawBinary;
        }

if (PHP_BINARY !== '') {
            self::$rawBinary   = PHP_BINARY;
            self::$initialized = true;

return self::$rawBinary;
        }

// @codeCoverageIgnoreStart
        $possibleBinaryLocations = [
            PHP_BINDIR . '/php',
            PHP_BINDIR . '/php-cli.exe',
            PHP_BINDIR . '/php.exe',
        ];

foreach ($possibleBinaryLocations as $binary) {
            if (is_readable($binary)) {
                self::$rawBinary   = $binary;
                self::$initialized = true;

return self::$rawBinary;
            }
        }

self::$rawBinary   = 'php';
        self::$initialized = true;

return self::$rawBinary;
        // @codeCoverageIgnoreEnd
    }

/**
     * Returns the escaped path to the binary of the current runtime.
     */
    public function getBinary(): string
    {
        return escapeshellarg($this->getRawBinary());
    }

public function getNameWithVersion(): string
    {
        return $this->getName() . ' ' . $this->getVersion();
    }

public function getNameWithVersionAndCodeCoverageDriver(): string
    {
        if ($this->hasPCOV()) {
            return sprintf(
                '%s with PCOV %s',
                $this->getNameWithVersion(),
                phpversion('pcov'),
            );
        }

if ($this->hasXdebug()) {
            return sprintf(
                '%s with Xdebug %s',
                $this->getNameWithVersion(),
                phpversion('xdebug'),
            );
        }

return $this->getNameWithVersion();
    }

public function getName(): string
    {
        if ($this->isPHPDBG()) {
            // @codeCoverageIgnoreStart
            return 'PHPDBG';
            // @codeCoverageIgnoreEnd
        }

return 'PHP';
    }

public function getVendorUrl(): string
    {
        return 'https://www.php.net/';
    }

public function getVersion(): string
    {
        return PHP_VERSION;
    }

/**
     * Returns true when the runtime used is PHP and Xdebug is loaded.
     */
    public function hasXdebug(): bool
    {
        return $this->isPHP() && extension_loaded('xdebug');
    }

/**
     * Returns true when the runtime used is PHP without the PHPDBG SAPI.
     */
    public function isPHP(): bool
    {
        return !$this->isPHPDBG();
    }

/**
     * Returns true when the runtime used is PHP with the PHPDBG SAPI.
     */
    public function isPHPDBG(): bool
    {
        return PHP_SAPI === 'phpdbg';
    }

/**
     * Returns true when the runtime used is PHP with the PHPDBG SAPI
     * and the phpdbg_*_oplog() functions are available (PHP >= 7.0).
     */
    public function hasPHPDBGCodeCoverage(): bool
    {
        return $this->isPHPDBG();
    }

/**
     * Returns true when the runtime used is PHP with PCOV loaded and enabled.
     */
    public function hasPCOV(): bool
    {
        return $this->isPHP() && extension_loaded('pcov') && ini_get('pcov.enabled');
    }

/**
     * Parses the loaded php.ini file (if any) as well as all
     * additional php.ini files from the additional ini dir for
     * a list of all configuration settings loaded from files
     * at startup. Then checks for each php.ini setting passed
     * via the `$values` parameter whether this setting has
     * been changed at runtime. Returns an array of strings
     * where each string has the format `key=value` denoting
     * the name of a changed php.ini setting with its new value.
     *
     * @return string[]
     */
    public function getCurrentSettings(array $values): array
    {
        $diff  = [];
        $files = [];

if ($file = php_ini_loaded_file()) {
            $files[] = $file;
        }

if ($scanned = php_ini_scanned_files()) {
            $files = array_merge(
                $files,
                array_map(
                    'trim',
                    explode(",\n", $scanned),
                ),
            );
        }

foreach ($files as $ini) {
            $config = parse_ini_file($ini, true);

foreach ($values as $value) {
                $set = ini_get($value);

if (empty($set)) {
                    continue;
                }

if ((!isset($config[$value]) || ($set !== $config[$value]))) {
                    $diff[$value] = sprintf('%s=%s', $value, $set);
                }
            }
        }

return $diff;
    }

private function isOpcacheActive(): bool
    {
        if (!extension_loaded('Zend OPcache')) {
            return false;
        }

if ((PHP_SAPI === 'cli' || PHP_SAPI === 'phpdbg') && ini_get('opcache.enable_cli') === '1') {
            return true;
        }

if (PHP_SAPI !== 'cli' && PHP_SAPI !== 'phpdbg' && ini_get('opcache.enable') === '1') {
            return true;
        }

return false;
    }
}

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